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    <title>连接两个数组 - concat()</title>
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    <h1>JavaScript 数组方法</h1>
    <h2>concat()</h2>
    <p>concat() 方法用于合并（连接）数组：</p>
    <p id="demo"></p>
    <script>
        var myGirls = ["Emma", "Isabella"];
        var myBoys = ["Jacob", "Michael", "Ethan"];
        var myChildren = myGirls.concat(myBoys);

        document.getElementById("demo").innerHTML = myChildren;
    </script>
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